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Questions and Answers
What is the defining characteristic of a plastic body?
What is the defining characteristic of a plastic body?
- It can regain its configuration after deforming.
- It is always made of metals.
- It can only be deformed once.
- It cannot regain its configuration after deforming. (correct)
Which of the following materials is considered a perfectly elastic body?
Which of the following materials is considered a perfectly elastic body?
- Quartz (correct)
- Clay
- Rubber
- Glass
Which of the following statements is true about elasticity and plasticity?
Which of the following statements is true about elasticity and plasticity?
- Plasticity is the ability to return to original shape.
- Elastic bodies can recover from deformation, while plastic bodies cannot. (correct)
- Elastic bodies become plastic when deformed.
- Plastic bodies are more flexible than elastic bodies.
Which of the following best describes elasticity?
Which of the following best describes elasticity?
What happens to an elastic body when the deforming force is removed?
What happens to an elastic body when the deforming force is removed?
Which branch of mechanics specifically addresses motion without considering the cause?
Which branch of mechanics specifically addresses motion without considering the cause?
What term is used to describe a force that alters the shape and size of an object?
What term is used to describe a force that alters the shape and size of an object?
Which of the following statements about dynamics is true?
Which of the following statements about dynamics is true?
What is the primary focus of mechanics in physics?
What is the primary focus of mechanics in physics?
In the study of mechanics, what distinguishes dynamics from kinematics?
In the study of mechanics, what distinguishes dynamics from kinematics?
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Study Notes
Mechanics Overview
- Mechanics is a branch of Physics focused on the motion of bodies at low speeds.
Types of Mechanics
- Kinematics:
- Studies motion without considering the forces that cause it.
- Dynamics:
- Examines motion and the forces that cause it.
Elasticity Concepts
- Deforming Force:
- A force that alters the shape and size of a body.
- Elasticity:
- The ability of a body to return to its original shape after the deforming force is removed.
- Plasticity:
- The inability of a body to regain its original shape post removal of the deforming force.
Types of Bodies
- Elastic Body:
- A body that returns to its original configuration after the deforming force is removed.
- Example of nearly perfect elastic bodies includes quartz and phosphorus bronze.
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